Quick update on the matter:
It seems like the culprit was the Facebook app after all. On a full recharge, as soon as I noticed the usage time being the same with the standby (meaning the bug was occurring), I deleted the app and without even rebooting my iPhone, the usage time stopped counting in the time that the phone was actually on standby.
So then, I rebooted the phone and installed the FB app afresh. Usage battery time was normal for about two weeks until yesterday when the same thing happened again. I woke up and the usage time was counting more than 10 hours (lol). Deleted the FB app again and things were back to normal.
I don't think I'll reinstall FB for the time being but I'm curious to find out why is this happening in the first place? I mean I had FB installed on all my iPhones since forever and this is the 1st time I'm experiencing something like this. Also, why isn't this affecting everyone? I bet the FB app is installed on millions of iPhones and no one is noticing this besides me and a few others?
It seems like the culprit was the Facebook app after all. On a full recharge, as soon as I noticed the usage time being the same with the standby (meaning the bug was occurring), I deleted the app and without even rebooting my iPhone, the usage time stopped counting in the time that the phone was actually on standby.
So then, I rebooted the phone and installed the FB app afresh. Usage battery time was normal for about two weeks until yesterday when the same thing happened again. I woke up and the usage time was counting more than 10 hours (lol). Deleted the FB app again and things were back to normal.
I don't think I'll reinstall FB for the time being but I'm curious to find out why is this happening in the first place? I mean I had FB installed on all my iPhones since forever and this is the 1st time I'm experiencing something like this. Also, why isn't this affecting everyone? I bet the FB app is installed on millions of iPhones and no one is noticing this besides me and a few others?